class UrlCollection:
    def __init__(self):
       self. __base_url = 'https://pbiwikimc.com/'
       self.__base_category = 'https://pbiwikimc.com/wiki/Category:%s'
       self.__categories = ['DCI_TSGs','Event_Based_TSG','General/Other_TSGs','Gomez_TSG','Key_Performance_Counters_TSG'
                        'Kusto_TSG','PBI_Desktop_TSGs','PBIP_TSG','Security_TSGs']

    @property
    def base_url(self):
        return self.__base_url

    @property
    def base_category(self):
        return self.__base_category

    @property
    def categories(self):
        return self.__categories
